When you propose ridiculous things to believe, too many men will choose to believe nothing at all.
Wisest is he who knows he knows not.
A free soul ought not to pursue any study slavishly, for nothing that is learned under compulsion stays with the mind.
Nobody knows anything, but I, knowing nothing, am the smartest man in the world.
It seems that God took away the minds of poets that they might better express His.
Ordinary people seem not to realize that those who really apply themselves in the right way to philosophy are directly and of their own accord preparing themselves for dying and death.